#include <stdio.h>

int main()
{
    int n1,nm,i,j,flag,count = 0;
    do
    {
        printf("Input START an END = ?");
        scanf("%d%d",&n1,&nm);
    }
    while(!(n1 > 0 && n1 < nm));
    printf("-----------------PRIME TABLE(%d - %d)----------------\n",n1,nm);
    if(n1 == 1 || n1 ==2)
    {
        printf("%4d",2);
        n1 = 3;
        count++;
    }
    for(i = n1;i <= nm;i++)
    {
        if(!(i % 2))
        continue;
        for(flag = 1,j = 3;flag && j < i / 2;j += 2)
        if(!(i % j))
        flag = 0;
        if(flag)
        printf(++count%15?"%4d":"%4d\n",i);
    }
    printf("\n");
}